Related Experiment Video
Updated: May 15, 2026
04:58
Embedded Bioprinting of Tissue-like Structures Using κ-Carrageenan Sub-Microgel Medium
Published on: May 3, 2024
Photocrosslinkable kappa-carrageenan hydrogels for tissue engineering applications
Silvia M Mihaila1, Akhilesh K Gaharwar, Rui L Reis
1Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge 02139, USA.
Advanced Healthcare Materials
|January 3, 2013
Summary
This study developed photocrosslinkable kappa carrageenan (κ-CA) hydrogels for tissue engineering. These versatile biomaterials offer tunable properties and support cell viability, advancing regenerative medicine applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Polymer Chemistry
Background:
- Kappa carrageenan (κ-CA) mimics natural extracellular matrix components.
- Ionic crosslinking of κ-CA yields strong but brittle hydrogels.
- Existing κ-CA hydrogels have limitations for advanced tissue engineering.
Purpose of the Study:
- To synthesize photocrosslinkable κ-CA hydrogels with tunable properties.
- To investigate the impact of methacrylation degree on hydrogel characteristics.
- To evaluate cell viability within the developed hydrogel systems for tissue engineering.
Main Methods:
- Methacrylation of κ-CA backbone to introduce photocrosslinkable moieties.
- Fabrication of physically and chemically crosslinked hydrogels.
- Characterization of hydrogel properties: hydration, dissolution, morphology, mechanical, and rheological.
- Assessment of fibroblast cell viability within photocrosslinked hydrogels.
Main Results:
- Photocrosslinkable κ-CA hydrogels exhibited controllable compressive moduli, swelling ratios, and pore size distributions.
- Combination of physical and chemical crosslinking resulted in versatile hydrogel properties.
- Fibroblast cells encapsulated in the hydrogels maintained high viability.
- Micromolding enabled spatially controlled geometries and cell distribution.
Conclusions:
- Photocrosslinkable κ-CA hydrogels offer a promising platform for tissue engineering.
- Tunable properties and cell viability make them adaptable for various regenerative strategies.
- This work presents the first report of photocrosslinkable κ-CA with controlled mechanical and structural features.
